Check device



J. BEEBY CHECK DEVICE Aug. 4, 1925.

Filed NOV. 26, 1923 INVENTOFE ATTORNEY r an airhole 5.

Patented Aug. 4, 1925.

UNITED STATES JAMES BEEBY, OF CHICAGO, ILLINOIS.

CHECK DEVICE.

Application filed November 26, 1923. Serial No. 677,123.

T 0 all whom it may concern.

Be it known that 1, JAMES BEEBY a citizen of the United States, residingat Chicago, in the county of Cook and State of Illinois, have inventednew and useful Improvements in Check Devices, of which the following isa. specification.

This invention relates to a check device and has for its primary objectthe construction of a device of few substantial part-s arranged in amanner as to frictionally check the movement of an object such as a dooror any other suitable movable object.

An object of the invention is the novel construction of a plunger sothat frictional engagement thereof with the cylinder may be changed atwill to accomplish the best results.

Besides the above my invention is distinguished in the arrangement oftwo retarding elements one coming into action after travel of the othera predetermined distance.

WVith these and other objects in view the invention will be betterunderstood from the following detailed description taken in connectionwith the accompanying drawing wherein:

Fig. 1 is a side elevation of the device.

Fig. 2 is a sectional view on the line 2-2 of Fig. 1.

Fig. 3 is a sectional view on the line 38 of Fig. 1.

Fig. 4 is a. side elevation of the plunger showing how same is bulged bypressing the screw.

Fig. 5 is a detailed sectional view showing the open end of the cylinderflared.

Again referring to the drawing illustrating one of the manyconstructions of my invention the numeral 1 designates a cylindersecured to a support as indicated at 2 by the screw 3. This cylinder isclosed at the end 4: which closed end is provided with The cylinder isfurther provided with an open end 6. A plate? is adapted to haveadjustable connection with the movable object such as a door by thescrew and slot connection 8 and projecting fro-m this plate is the stem9 shaped to provide a shoulder 10. A plunger 11, of resilient materialsuch as rubber, is arranged on the stem and one end abuts the shoulder10 sothat upon operation of the screw 11 that is threaded in one end ofthe stem against the disc 12 the exterior of the surface of theyieldable plunger 11 will be bulged to any desired degree to increasefrictional engagement of the plunger with the wall of the cylinder. Thusit will be seen in a very simple manner frictional action may be changedat will and wear easily taken care of. An extra retarding device isprovided consisting of the bumper ring 13 arranged aroundthe stem andadapted to come int-o engagement with one end of the cylinder after theplunger has traveled a. predetermined distance in the cylinder. Fromthis construction it will be seen the closing of a door will befrictionally checked and in such a manner that no metal or rigidelements come in contact with one another thereby preventing any noiseand providing an absolutely silent device.

In Figure 5 I have shown the open end flared as indicated at 14 so as tofacilitate tlhe insertion of the plunger into the cylincer.

It is, of course, to be understood the various parts may be constructedin various other ways and associated in other relations and may be usedfor checking various objects and in fact the cylinder may be heldstationary as illustrated in the drawing and the plunger movable or viceversa, i. e., the plunger may be stationary and the cylinder movable;therefore, I do not desire to be limited in any manner except as setforth in the claims hereunto appended.

Having thus described my what I claim is:

1. A check device comprising a cylinder, a plunger for movement into andout of said cylinder, means for changing the frictional action of theplunger when moving within the cylinder, and a separate bumper devicearranged to engage the cylinder when the plunger has moved a.predetermined distance within the cylinder.

2. A check device comprising a cylinder having one end open and theother end closed and provided with an airhole, aplate adapted to haveadjustable connection with a support, a stem projecting therefrom, aresilient plunger mounted on the stem for engagement into and out ofsaid cylinder. a screw device for adjusting the shape of said plungerand regulating frictional engagement with the cylinder, and a bumperring mounted around the stem for engageinvention ment with the end ofthe cylinder when the plunger has traveled a predetermined distancewithin the cylinder.

3. A check device comprising a cylinder, means supporting the cylinderon a station ary object, a plate adapted'to have adjustable connectionwith a movable object, a stem projecting from the plate, a plungermounted on the stem for engagement into and out of the cylinder, meansfor expanding the plunger circumferentially to regu-' ture.

JAMES BEEBY.

